[gameone] Add new extractor gameone

Currently only usable for downloading tv episodes residing under
http://www.gameone.de/tv/
[gameone] Added explanation for usage of http://cdn.riptide-mtvn.com/
[gameone] Added extraction of description and fixed failing tests
[gameone] Simplified extraction of description
[gameone] Added extraction of age_limit
[gameone] Added timestamp extraction
[adultswim] Add new extractor
[adultswim] Fix tests
[tenplay] Add new extractor
[gameone] Fix indentation and removed unused constants
merge upstream from git@github:rg3/youtube-dl
Added vimple.ru support
removed extra char in regexp
Verified with pep8 and pyflakes
[teachertube] Fix extraction
release 2014.06.24
release 2014.06.24.1
[comedycentral] Correct handling when latest tds episode is a special-episode instead of a regular one
[wistia] Add duration and modernize
[discovery] Change default url

URL does a redirect from dsc.discovery.com to www.discovery.com
This commit fixes the correct URL.